Bonding and molecule shape

Question 1

Ionic bonding

Answer 1

• Between a non metal and a metal

- Create strong electrostatic forces of attraction, as an electron is given to the non metal from the metal

Question 2

Properties of ionically bonded compounds

Answer 2

• high melting/boiling points due to strong electrostatic forces of attraction
• conduct when molten/dissolved as there are then free electrons
• brittle due tot whir regular lattice structure

Question 3

Covalent bonds

Answer 3

• Shared pair of electrons between 2 non metals
• don’t conduct
• high boiling/melting points
• high electron density between nuclei - electrostatic attraction
• the larger the charge the stronger the bond

Question 4

Dative covalent bonds

Answer 4

• the pair of electrons shared both come from one single atom

Question 5

Valence Shell Electron Pair Repulsion

Answer 5

• electrons repel each other as much as possible, less electrons gives a larger bond angle - in order to reduce the electrostatic repulsion
• lone pairs have a larger force of repulsion
• this allows us to predict the molecule shapes